The book, based on Walker’s real-life experience, was released in October by Amazon Publishing’s Little A.

The story centers on a bi-racial college student who falls in love with a Swahili man living on an idyllic island off the coast of Kenya. The two plan to marry and envision a simple life together but are caught in the middle of a civil war, which threatens to tear them apart.

Madonna and the producers are planning to attach a screenwriter. CAA is arranging financing.

Madonna most recently directed 2011’s “W.E.,” depicting the romance between British King Edward VIII and American divorcee Wallis Simpson.

Walker is the daughter of Alice Walker, author of “The Color Purple,” and attorney Mel Leventhal. She’s published memoirs “Black, White and Jewish: Autobiography of a Shifting Self” and “Baby Love: Choosing Motherhood After a Lifetime of Ambivalence.”

Madonna is represented by CAA and Untitled Entertainment. Cohen is represented by CAA and Alan Hergott and Eric Brooks of Bloom Hergott. Walker is represented by UTA, Anderson Literary Management, and Shep Rosenman at Katz Golden Rosenman.